Stock Compensation Plans (Tables)

3 Months Ended

Mar. 31, 2022

Share-based Payment Arrangement [Abstract]

Summary of stock compensation expense and related net tax benefit

The following table presents a summary of the total share-based compensation expense and the related net tax benefits associated with the Company’s various employee share-based compensation plans for the three months ended March 31, 2022 and 2021:

($ in thousands)	Three Months Ended March 31,
	2022		2021
Stock compensation costs	$	8,433	$	7,817
Related net tax benefits for stock compensation plans	$	5,159	$	1,620

Summary of activity for time-based and performance-based restricted stock units

The following table presents a summary of the activities for the Company’s time-based and performance-based RSUs that will be settled in shares for the three months ended March 31, 2022. The number of performance-based RSUs stated below reflects the number of awards granted on the grant date.

	Time-Based RSUs			Performance-Based RSUs
	Shares	Weighted- Average Grant Date Fair Value		Shares	Weighted- Average Grant Date Fair Value
Outstanding, January 1, 2022	1,329,946	$	52.65	369,731	$	54.28
Modified from cash-settled RSUs	31,523	77.28		—	—
Granted	395,486	53.16		91,874	77.91
Vested	(356,650)	53.30		(125,213)	54.64
Forfeited	(28,220)	56.77		—	—
Outstanding, March 31, 2022	1,372,085	$	53.11	336,392	$	60.60

Summary of time-based RUS's that will be settled in cash

The following table presents a summary of the activities for the Company’s time-based RSUs that are cash-settled for the three months ended March 31, 2022. In the first quarter of 2022, the amount of cash paid to settle the RSUs that vested was $318 thousand.

	Shares
Outstanding, January 1, 2022	32,647
Modified to share-settled RSUs	(31,523)
Granted	2,668
Vested	(3,471)
Forfeited	(321)
Outstanding, March 31, 2022	—